Organisation internationale de normalisation

General Input Documents

1. AHG reports

Number	Session	Title	Source		Dispositions
M36789	Plenary	AHG on MPEG File Formats
M36399	Plenary	AHG on Font Format Representation
M36766	Plenary	AHG on MPEG-DASH
M36767	Plenary	AHG on Multimedia Preservation Application Format (MP-AF)
M36819	Plenary	AHG on MPEG Media Transport
M36758	Plenary	AHG on Green MPEG
M36783	Plenary	AHG on User Description
M36165	Plenary	AHG on Media Orchestration
M36738	Plenary	AHG on Contract Expression Language, Media Contract Ontology and Publish/Subscribe Application Format
M36806	Plenary	AHG on Media Linking Application Format (MLAF)
M36786	Plenary	Report of AHG on real-time streaming of media files

All AHG reports are accepted.

2. General technical contributions

Number	Session	Title	Source		Dispositions

1. Summary of discussion

• 
  
  

4. Demo

5. FAQ

.

6. AOB

None.

2. MPEG-2 Systems (13818-1)

   1. Topics

      1. ISO/IEC 13818-1:2013 AMD 2 Carriage of layered HEVC

This amendment will specify layered coding techniques, namely multiview and scalable HEVC coding. Layered media streams need to be supported by the transport formats in a way that different layers can be encapsulated and transported individually.

2. ISO/IEC 13818-1:2014 AMD 3 Carriage of Green Metadata

This amendment specifies a format for carriage of green metadata that enables display power reduction in MPEG-2 TS. The metadata consists of frame statistics and quality indicators. This metadata allows the client to attain a specified quality level by scaling frame-buffer pixels and to reduce power correspondingly by decreasing the display backlight or OLED voltage.

3. ISO/IEC 13818-1:2014 AMD 4 New Profiles and Levels for MPEG-4 Audio Descriptor

This amendment extends Table 2-71 with more MPEG-4_audio_profile_and_level assignment values.

4. ISO/IEC 13818-1:2014 AMD 5 Carriage of 3D Audio

This amendment defines stream type, descriptors and buffer model to carry MPEG-H 3D audio bitstream in MPEG-2 TS. Two stream types will be assigned to distinguish main stream from auxiliary stream. Descriptors will provide information on user selectable and/or modifiable audio objects and information on which object contains either supplementary or main audio. T-STD extension will allow

splitting an encoded audio scene into several elementary streams. One single audio decoder decodes all elementary streams to one audio presentation. Each of those elementary streams carries one or more encoded channel signals.

5. ISO/IEC 13818-1:2014 AMD 6 Carriage of Quality Metadata

This amendment specifies the carriage of Quality Metadata (ISO/IEC 23001-10) in MPEG-2 systems. Quality metadata enhances adaptive streaming in clients during the presentation of media. The carriage is specified for transport streams only and includes the signalling of static metadata as well as dynamic metadata.

2. Contributions

Number	Session	Title	Source	Dispositions
m36215		Table of Replies on ISO/IEC 13818-1:201x/FDAM 1	ITTF via SC 29 Secretariat	Noted
m36191	MPEG-2	Summary of Voting on ISO/IEC 13818-1:201x/DAM 2	SC 29 Secretariat	Refer N15467
m36192	MPEG-2	Summary of Voting on ISO/IEC 13818-1:201x/DAM 3	SC 29 Secretariat	Refer N15469
m36662	MPEG-2	Summary of Voting on ISO/IEC 13818-1:201x/PDAM 6	SC 29 Secretariat	Refer N15472
m36202	MPEG-2	Summary of Voting on ISO/IEC 13818-1:201x/Amd.1/DCOR 1	SC 29 Secretariat	Refer N15465
m36240	MPEG-2	AF Boundary and Labeling Descriptor on MPEG-2 TS	Wendell Sun	Accepted N15475
m36245	MPEG-2	Suggestion how to deal with a minor flaw in 13818-1 PES extension	Karsten Grüneberg	Accepted N15474
m36466	MPEG-2	Carriage of Multiple Streams in a Single PID	Robert Brondijk, Werner de Bruijn,	Noted
m36516	MPEG-2	Proposed updates to ISO/IEC 13818-1 DAM 5	Harald Fuchs, Adrian Murtaza, Ingo Hofmann, Stephan Schreiner	Accepted N15471
m36548	MPEG-2	Comments on MPEG-2 TS extensions	Ye-Kui Wang, Hendry	Accepted N15468
m36610	MPEG-2	Proposed Enhancements on AMD6 of ISO/IEC 13818-1	Ozgur Oyman	Accepted N15473

3. Summary of discussions

1. m 36548 from Qualcomm (‘comments on MPEG-2 TS extensions’).

• 
  Agreed that start code emulations in program streams are not an issue as most recent amendments do not support ‘program streams’.
  
• 
  Agreed to add a note related to operation point signaling where some layers may not be present in the PMT. This is expected to assist applications.
  

1. M 36516 from IIS

• 
  proposed updates to DAM 5. This includes the comand_descriptor proposed in TuC.
  
• 
  Agreed to accept m 36516 and will produce a study text of ISO/IEC 13818-1:2015 / DAM 5. This will also correct stream_type values to reflect prior amendments and increase ‘reserved’ bits in audio descriptor from ‘1’ to ‘9’ for future extensibility.
  

1. M 36466 from Philips

• 
  carriage of multiple streams in single PID and changes to PMT.
  

1. m 36240

• 
  related to boundary and labeling descriptor.
  
• 
  Agreed to produce WD of amendment 7.
  

1. m 36245 from HHI

• 
  related to PES header errata item. We also reviewed an e-mail comment from ISO member related to a missing syntax element in metadata carriage (section 2.6.60 and 2.6.61).
  
• 
  Both these were accepted and will be combined to produce DCOR 2 at this meeting. Systems group is requested to approve a resolution thanking ISO representative for the input.
  

4. Action Points / Ballots

ITU-T H.222.0 (xx/201x)|ISO/IEC 13818-1:2013 13818-1:201x/DAM 4 (SC 29 N 14565)	Systems AMENDMENT 5 4: New Profiles and Levels for MPEG-4 Audio Descriptor	DAM (2015-07-23)
ITU-T H.222.0 (xx/201x)|ISO/IEC 13818-1:2013 13818-1:201x/DAM 5 (SC 29 N 14824)	Systems AMENDMENT 5: Carriage of MPEG-H 3D audio over MPEG-2 Systems	DAM (2015-09-18)

3. MPEG-4 ISO Base File Format (14496-12)

   1. Topics

      1. ISO/IEC 14496-12:201X/AMD 4: Improved audio support

This amendment enhances the codec-independent support for audio in the file format, adding the ability to declare downmixing and dynamic range control of audio, and describe the loudness of the program, before or after downmix or dynamic range control. It also supports the codec-independent declaration of channel layout, and identifying the carriage of DRC coefficients both in the audio stream, and in a separate track.

2.